Stephen Coogan is a staff software engineer based in Dublin with 13 years of hands-on front-end experience, currently shaping frontend architecture and delivery at Personio. He’s passionate about web standards, free/open tech, and building polished, performant interfaces—often advocating testing-first practices and component-driven design to enable rapid, low-incident releases. Previously he led front-end architecture at CarTrawler, where he drove a monorepo, comprehensive testing (unit, E2E, visual), Lighthouse CI, and a framework-agnostic design system that bridged Engineering and Design. Known wryly on GitHub as a “Professional Mistake Maker,” he combines pragmatic experimentation with disciplined engineering to ship reliable UIs at scale.
13 years of coding experience
13 years of employment as a software developer
Certificate, Server-side Technologies, Certificate, Server-side Technologies at National College of Ireland
Contributions:84 commits, 39 PRs, 106 pushes in 7 years 11 months
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Stephen Coogan - Staff Software Engineer at Personio